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                            <div style="color:gray; word-break: break-all; font-size:12px;">原英文版地址: <a href="https://www.elastic.co/guide/en/elasticsearch/reference/7.7/recovery-prioritization.html" rel="nofollow" target="_blank">https://www.elastic.co/guide/en/elasticsearch/reference/7.7/recovery-prioritization.html</a>, 原文档版权归 www.elastic.co 所有<br/>本地英文版地址: <a href="../en/recovery-prioritization.html" rel="nofollow" target="_blank">../en/recovery-prioritization.html</a></div>
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<strong>重要</strong>: 此版本不会发布额外的bug修复或文档更新。最新信息请参考 <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html" rel="nofollow">当前版本文档</a>。
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<span class="breadcrumb-node">Index recovery prioritization</span>
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<a id="recovery-prioritization"></a>Index recovery prioritization<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/index-modules/allocation/prioritization.asciidoc">edit</a>
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<p>Unallocated shards are recovered in order of priority, whenever possible.
Indices are sorted into priority order as follows:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
the optional <code class="literal">index.priority</code> setting (higher before lower)
</li>
<li class="listitem">
the index creation date (higher before lower)
</li>
<li class="listitem">
the index name (higher before lower)
</li>
</ul>
</div>
<p>This means that, by default, newer indices will be recovered before older indices.</p>
<p>Use the per-index dynamically updatable <code class="literal">index.priority</code> setting to customise
the index prioritization order.  For instance:</p>
<div class="pre_wrapper lang-console">
<pre class="programlisting prettyprint lang-console">PUT index_1

PUT index_2

PUT index_3
{
  "settings": {
    "index.priority": 10
  }
}

PUT index_4
{
  "settings": {
    "index.priority": 5
  }
}</pre>
</div>
<div class="console_widget" data-snippet="snippets/1035.console"></div>
<p>In the above example:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
<code class="literal">index_3</code> will be recovered first because it has the highest <code class="literal">index.priority</code>.
</li>
<li class="listitem">
<code class="literal">index_4</code> will be recovered next because it has the next highest priority.
</li>
<li class="listitem">
<code class="literal">index_2</code> will be recovered next because it was created more recently.
</li>
<li class="listitem">
<code class="literal">index_1</code> will be recovered last.
</li>
</ul>
</div>
<p>This setting accepts an integer, and can be updated on a live index with the
<a class="xref" href="indices-update-settings.html" title="Update index settings API">update index settings API</a>:</p>
<div class="pre_wrapper lang-console">
<pre class="programlisting prettyprint lang-console">PUT index_4/_settings
{
  "index.priority": 1
}</pre>
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<div class="console_widget" data-snippet="snippets/1036.console"></div>
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